Plug adapter



FIG. 1 is a top view of a first embodiment of a plug adapter;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a top view of a second embodiment of a plug adapter;

FIG. 9 is a bottom view thereof;

FIG. 10 is a left side view thereof;

FIG. 11 is a right side view thereof;

FIG. 12 is a front view thereof;

FIG. 13 is a rear view thereof; and,

FIG. 14 is a perspective view thereof.

The dashed broken lines and dash-dot broken lines in the drawings are for the purpose of illustrating portions of the plug adapter that form no part of the claimed design. 

CLAIM The ornamental design for a plug adapter, as shown and described. 